QUALCOMM Incorporated
User equipment operation in bandwidth narrower than synchronization signal bandwidth

Abstract:

A base station may identify that a user equipment (UE) supports operation within a UE bandwidth that is less than a synchronization signal bandwidth used by a wireless network to transmit a synchronization signal. The base station may then generate a synchronization signal raster (e.g., sub-raster) based at least in part on the UE bandwidth being less than the synchronization signal bandwidth. The raster may ensure portions or specific sections (e.g., subbands) of the synchronization signal are captured by the narrowband UE. In some cases, the base station may configure or modify a synchronization signal based at least in part on wireless network support of narrowband UE operation. For example, supplementary narrowband synchronization signals transmitted over additional time and/or frequency resources, partially decodable wideband synchronization signals designed to allow partial correlation/decoding by narrowband UEs, or concatenated synchronization signal segments (e.g., in frequency) may be employed.